package com.example.zbh.lessona.duckdemo;

/**
 * Created by zbh on 15/11/18.
 */
public abstract class Duck {
    public  FlyBehavior flyBehavior;
    public QuackBehavior quackBehavior;
    abstract void swim();
    abstract void diplay();
    abstract void perform();
    abstract void setFlyBehavior();
    abstract void setQuackBehavior();



}
